N54 MHD flash (Mel CBD)

tbone1210 · 09-13-2017, 08:26 AM

Hi all,
I have problems flashing my BMW.
here's what happened:
-I have unplugged the battery to reset the DME because I have failed to flashed it. And I have tried to flash it for a couple of times after plugging the battery back and it's still not working.
-Can someone please help me

Cheers

Digitalism · 09-13-2017, 08:57 AM

What type of cable do you have?

tbone1210 · 09-13-2017, 10:22 AM

K+DCAN cable from ebay. Where can I get a proper one?

Brule · 09-13-2017, 04:07 PM

Everyone has eBay cables.

What's the issue?
Where does the error occur?

Hoper · 09-13-2017, 04:39 PM

If it was your first MHD flash, did you have the car on a battery charger?

BM335M · 09-13-2017, 08:59 PM

Did you do a backup of the stock map? You can flash it back to stock and try again, i had the same problem the first time, the cable was an issue for me.

tbone1210 · 09-13-2017, 11:12 PM

Quote:

Originally Posted by BM335M

Did you do a backup of the stock map? You can flash it back to stock and try again, i had the same problem the first time, the cable was an issue for me.

I'm not able to flash back to stock as the MHD told me that my backup file has corrupted. They advised me to flash it to Stage 0 instead.

When I flashed stage 0, it showed 'ffffffffff' and failed to flash it

Digitalism · 09-13-2017, 11:12 PM

Why don't you try hooking up a battery charger.

I had a similar problem where my cable went bad even after several successful flashes in the past.

tbone1210 · 09-13-2017, 11:13 PM

Quote:

Originally Posted by Hoper

If it was your first MHD flash, did you have the car on a battery charger?

It is not my first flash, I've been flashing for couple of times with no problems. I'm not sure is it something wrong with my battery lol. I have VRSF charged pipe and Catless Downpipe installed. I had the car on battery charger

tbone1210 · 09-13-2017, 11:16 PM

Quote:

Originally Posted by Brule

Everyone has eBay cables.

What's the issue?
Where does the error occur?

Once it failed to flash, the windscreen wipers gone crazy and the dash lights started flashing.

I have to waited for a bit to let the car reset or something to get the key out.

tbone1210 · 09-13-2017, 11:17 PM

Quote:

Originally Posted by Digitalism

Why don't you try hooking up a battery charger.

I had a similar problem where my cable went bad even after several successful flashes in the past.

Did you get the cable off ebay? Do u have any recommendation?

tbone1210 · 09-13-2017, 11:23 PM

Quote:

Originally Posted by Digitalism

Why don't you try hooking up a battery charger.

I had a similar problem where my cable went bad even after several successful flashes in the past.

I have left it charged overnight for the first time. I'll charged it till 100%.

And I'll see how it goes.

BM3Rrrr · 09-14-2017, 12:26 AM

If your not doing a full write (40min) you shouldn't need a battery charger hooked up.
I assume when you say you have flashed many times before this is just a 2min re-write?

If that's the case the cable is probably your issue....many ebay cables seem to work a few times then all the sudden stop working.

tbone1210 · 09-14-2017, 02:44 AM

Quote:

Originally Posted by BM3Rrrr

If your not doing a full write (40min) you shouldn't need a battery charger hooked up.
I assume when you say you have flashed many times before this is just a 2min re-write?

If that's the case the cable is probably your issue....many ebay cables seem to work a few times then all the sudden stop working.

the map that i flashed was failed, that's why i need to reflash it for 40 mins.

Yea sort of, I've sort of went stock and stage 0.

tbone1210 · 09-14-2017, 09:44 AM

Hey guys, I'm able to flash it when my car is fully charged. It still took me 2 attempts for 40 mins and 2 mins. The first attempt showed HW:FFFFFF... and it failed after 100% (incomplete). Whereas the second attempt is the rewrite flash that took me 2 mins, and it worked afterward

Brule · 09-15-2017, 05:04 PM

Sweet
The symptoms you had with windscreen wipers etc is of incomplete flash and normal.

It will be very easy and quick now.

09-13-2017, 08:26 AM	#1
tbone1210 New Member 3 Rep 12 Posts Drives: 335i E92 N54 2009 Join Date: Mar 2017 Location: Mel CBD iTrader: (0)	N54 MHD flash (Mel CBD) Hi all, I have problems flashing my BMW. here's what happened: -I have unplugged the battery to reset the DME because I have failed to flashed it. And I have tried to flash it for a couple of times after plugging the battery back and it's still not working. -Can someone please help me Cheers
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09-13-2017, 08:57 AM	#2
Digitalism Lieutenant 53 Rep 398 Posts Drives: BMW 335i Join Date: Jul 2013 Location: Perth, Australia iTrader: (0)	What type of cable do you have?
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09-13-2017, 10:22 AM	#3
tbone1210 New Member 3 Rep 12 Posts Drives: 335i E92 N54 2009 Join Date: Mar 2017 Location: Mel CBD iTrader: (0)	K+DCAN cable from ebay. Where can I get a proper one?
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09-13-2017, 04:07 PM	#4
Brule Brigadier General 827 Rep 3,189 Posts Drives: 2007 335i e92 6spd man Join Date: Jul 2013 Location: Darwin iTrader: (0)	Everyone has eBay cables. What's the issue? Where does the error occur?
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09-13-2017, 04:39 PM	#5
Hoper Captain 184 Rep 687 Posts Drives: 2008 E92 335i 6MT Join Date: Sep 2016 Location: Canberra Australia iTrader: (0)	If it was your first MHD flash, did you have the car on a battery charger?
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09-13-2017, 08:59 PM	#6
BM335M Private First Class 40 Rep 165 Posts Drives: E90 335 M-Sport Join Date: Mar 2017 Location: Melbourne iTrader: (0)	Did you do a backup of the stock map? You can flash it back to stock and try again, i had the same problem the first time, the cable was an issue for me. __________________ 08 335 M-sport \| 6AT \| E30 MHD Stage 2 + \| Wagner EVO 1 \| VRSF DPs \| Lux V7 \| Golf Tee mod \| M3 Style Front bar \| 400hp atw
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09-13-2017, 11:12 PM	#8
Digitalism Lieutenant 53 Rep 398 Posts Drives: BMW 335i Join Date: Jul 2013 Location: Perth, Australia iTrader: (0)	Why don't you try hooking up a battery charger. I had a similar problem where my cable went bad even after several successful flashes in the past.
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09-14-2017, 12:26 AM	#13
BM3Rrrr Davy Jones, Giant Squid 271 Rep 913 Posts Drives: a Pirate Ship Join Date: Jun 2015 Location: The Isle of Tortuga iTrader: (0)	If your not doing a full write (40min) you shouldn't need a battery charger hooked up. I assume when you say you have flashed many times before this is just a 2min re-write? If that's the case the cable is probably your issue....many ebay cables seem to work a few times then all the sudden stop working.
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09-14-2017, 09:44 AM	#15
tbone1210 New Member 3 Rep 12 Posts Drives: 335i E92 N54 2009 Join Date: Mar 2017 Location: Mel CBD iTrader: (0)	Hey guys, I'm able to flash it when my car is fully charged. It still took me 2 attempts for 40 mins and 2 mins. The first attempt showed HW:FFFFFF... and it failed after 100% (incomplete). Whereas the second attempt is the rewrite flash that took me 2 mins, and it worked afterward Last edited by tbone1210; 09-14-2017 at 09:54 AM..
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09-15-2017, 05:04 PM	#16
Brule Brigadier General 827 Rep 3,189 Posts Drives: 2007 335i e92 6spd man Join Date: Jul 2013 Location: Darwin iTrader: (0)	Sweet The symptoms you had with windscreen wipers etc is of incomplete flash and normal. It will be very easy and quick now.
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